Buzz Aldrin is an American engineer and former astronaut. As the Lunar Module Pilot on Apollo 11, he was one of the first two humans to land on the Moon, and the second person to walk on it.
He set foot on the Moon at 03:15:16 on July 21, 1969 (UTC), following mission commander Neil Armstrong. He is a former U.S. Air Force officer with the Command Pilot rating.
He also went into orbit on the Gemini 12 mission, finally achieving the goals for EVA (space-walk work) that paved the way to the Moon and success for the Gemini program; he spent over five hours on EVA on that mission.